Crassomicrodus divisus (Cresson, 1873)

Figueroa, Jose Isaac, Sharkey, Michael Joseph, Napoles, Jesus Romero, Garcia, Jose Antonio Sanchez, Martinez, Ana Mabel, Lopez-Martinez, Victor & Pineda, Samuel, 2011, Revision of the new world genus Crassomicrodus Ashmead (Hymenoptera, Braconidae, Agathidinae), with an identification key to species, ZooKeys 142, pp. 27-75 : 37-38

Crassomicrodus divisus (Cresson, 1873) Fig. 5 a–e

Crassomicrodus divisus (Cresson): Bradley 1916: 139-140; Muesebeck 1927: 21.

Microdus divisus Cresson 1873: 52 [Examined].

Orgilus rileyi Ashmead 1888: 640 [Examined].

Epimicrodus divisus Ashmead 1900: 129.

Holotype female.

Illinois [USA]. No. 1726.1 (ANSP).

Description female.

Body. Length. 6.95-8.60 mm. Color (Fig. 5e). Integument black except reddish yellow as follows, pronotum, mesonotum, subalar lobe, tegulae, hind femora, and metasoma; mandible and wing veins dark brown; eye silver or blackish; ocelli translucent yellow; forewing infumate with a hyaline spot on the first submarginal cell that is similar in size to the parastigma. Rarely, central area of mesopleuron or hind coxa or propodeum and metapleuron reddish yellow. Head (Fig. 5ab). Triangular in frontal view; face with longitudinal ridge dorsomedially; eye height/width = 1.38-1.40; eye height 0.57 –0.58× inter-ocular distance; area between antennal sockets with a median pyramidal-shaped elevation, sometimes with two weakly defined tubercles; frons excavated with a pair of microfoveolate grooves that diverge towards the ocellar area; posterior surface of antennal sockets smooth; groove between lateral ocelli smooth; median ocellus separated from lateral ocellus by smooth groove; gena not bulging; malar space 0.78 –0.83× as long as eye height; clypeus 1.85 –1.95× wider than high; length of ventrolateral margin of clypeus similar to diameter of tentorial pit; antenna with 32-35 flagellomeres; setae at base of mandible distinctly longer than setae on rest of body surface. Mesosoma (Fig. 5cde). Pronotum reticulate rugulose, sometimes strigose; lateral pronotal margins with a shallow, crenulate groove; notauli impressed; anterolateral edges of scutellum lacking small acute projection; scutellar disc slightly convex with sparse setae from 0.10 to 0.11 mm in length; scutellar disc sloped posteriorly and flattened; lateral scutellar depression reticulate rugulose and foveolae; carinae of central metanotal area forming a triangular cell; propodeum reticulate rugose; subalar lobe separated from mesopleuron by wide rugose groove with reticulate foveolae, width almost of similar size to subalar lobe; metapleuron reticulate-rugose. Legs. Inner spur of middle tibia 0.67 –0.71× length of basitarsus; inner spur of hind tibia 0.59 –0.68× length of basitarsus; metabasitarsus 1.21 –1.29× length of tarsomeres III, IV, and V combined; hind tibia 2.17 –2.27× longer than basitarsus; hind femur length 3.91 –4.22× its maximum width. Wings. Forewing length/width = 2.56-2.60; stigma 3.27 –3.70× longer than maximum width; forewing vein R1 0.59 –0.64× as long as vein RS; vein RS not sinuate; vein r arising before middle of stigma; second submarginal cell quadrangular, with petiole 0.12-0.21 mm long; vein M+CU distinctly pigmented throughout; hind wing length/width = 3.25-3.51; hind wing vein 1M 1.52 –1.60× longer than 1r-m; hind wing with 6-7 hamuli. Metasoma. Apical width of petiole (tergum 1) 3.10 –3.13× wider than basal width; minimum width of petiole 0.61 –0.63× apical width; length of ovipositor sheath 0.33-0.41 mm.

Male.

Unknown.

Host.

Unknown.

Distribution.

Canada, Mexico, and USA.

Diagnosis.

Distinguished from other Crassomicrodus species by the following combination of characters: area between antennal sockets with a median pyramidal-shaped elevation, malar space 0.78 –0.83× as long as eye height, scutellar disc sloped posteriorly and flattened, head black and mesosoma mostly black with some areas reddish yellow.

Remarks.

Males of Crassomicrodus divisus were not found in this revision, although Muesebeck (1927) recorded them. We carefully examined long series from diverse localities to find them but without success. Therefore we speculate that males of this species are absent or very rare.

Material examined.

Type: Microdus divisus 1 ♀, Ill. (ANSP), Orgilus riley 1 ♀ (USNM). Homotype: 1 ♀, Texas: Davis Ranch, NW Blanco Co., 22/IV/1959, Mason W.R.M. (CNC). Other specimens examined .-1 ♀ (AMNH). 9 ♀ (INHS). 1 ♀(MSUC). 1 ♀ (USNM). 1 ♀; 19/VI/1898 (AEIC). 1 ♀; VII/1917 (USNM). 1 ♀; CANADA, Ontario: Constance Bay, Carleton Co., 24-31/VI/1977, Sanborne M. (CNC). 1 ♀;Ottawa, 3/X/1912, Beaulne J.I. (CNC). 1 ♀; Cana (USNM). 1 ♀; MEXICO, Durango: 10 miles N Durango, 12/VII/1954, McSwain (EMEC). 1 ♀; Guanajuato: San Miguel Allende, 12/VIII/1953, Vaurie C. & P. Vaurie (AMNH). 1 ♀; Jalisco: 4 miles W Mazamitla, 16/X/1950, 2073 m., Smith Ray F. (AMNH). 1 ♀;Guadalajara, 17/IX/1957, Dreisbach R. & K. Dreisbach (MSUC). 1 ♀;Guadalajara, 17-20/VII/1965, Evans H.E. (MCZ). 1 ♀; Nuevo León: 4 miles W El Cercado, 6/VI/1951, Hurd P.D. (EMEC). 1 ♀;9 miles W Iturbide, 3/VII/1974, Clark, Murray, Ashe, Schaffner (TAMU). 1 ♀; Puebla: Puebla, 3/VII/1952, Gilbert E.E. & C.D. MacNeil (EMEC). 1 ♀; Zacatecas: Trancosa, 3/VII/1961, Dreisbach R. & K. Dreisbach (MSUC). 4 ♀; USA, Colo. (USNM). 1 ♀;Detroit, 7/VI (USNM). 1 ♀; Arizona: Canelo, 10/VII/1957, Butler G.D. (HIC). 1 ♀; Illinois: Algonquin, 30/VIII/94-99 (INHS). 1 ♀;Algonquin, Nason (INHS). 1 ♀;Grand Tower, 28/VII/1905 (INHS). 1 ♀;Illinois, VIII/1899 (MCZ). 1 ♀;Meredosia, 20/VIII/1917 (INHS). 1 ♀; Iowa: Ames, 25/V/1925 (UCDC). 1 ♀;Sioux City, Ainslie C.N. (USNM). 1 ♀; Kansas: Baldwin, V/190?, Bridwell J.C. (USNM). 1 ♀;Baldwin, VIII, Bridwell J.C. (UCDC). 1 ♀;Douglas Co. (MCZ). 1 ♀;Manhattan, 10/VI/1950, Evans H.E. (KSUC). 1 ♀;Manhattan, 10/VII/1949, Kring James B. (KSUC). 1 ♀;Onaga, 9/VII/1922, Crevecoeur (KSUC). 1 ♀;Riley Co., 16/VI, Smith R.C. (KSUC). 1 ♀;Riley Co., 9/VII, Popenoe (KSUC). 1 ♀;Riley Co., V, Marlatt (KSUC). 1 ♀; Kentucky: Lexington (USNM). 1 ♀; Michigan: White Pigeon, St. Joseph Co., 14/VI/1959, Fischer R.L. (MSUC). 1 ♀; Minnesota: Lake Pepin E Frontenac, 24/V/1941, Sun V.P. (UMSP). 1 ♀;Ortonville, 5/VIII/1935, Denning D.G. (UMSP). 1 ♀;Olmsted Co.,VIII/1896, Linslie C.N.(USNM).1 ♀; Missouri: Columbia, Boone Co., 16/VIII/1968, Parker F.D., malaise trap (HIC). 1 ♀;Clayton, 3/VI/1939, Pickel B.H. (AEIC). 1 ♀; Columbia, 1/VIII/1968, Parker F.D. malaise trap (UCDC). 1 ♀;Columbia, 10/VIII/1967, Parker F.D. malaise trap (USNM). 1 ♀;Columbia, 14/IX/1939, Crajo W.S. (UMRM). 1 ♀;Columbia, 17/VIII/1966, Huber S.F. (USNM). 1 ♀;Columbia, 2/VIII/1968, Parker F.D. malaise trap (UCDC). 1 ♀;Columbia, 23/VIII/1967, Parker F.D. malaise trap (USNM). 2 ♀;Columbia, 26/VIII/1967, Parker F.D. malaise trap (USNM). 1 ♀;Columbia, 10/VII/1967, Parker F.D., malaise trap (USNM). 1 ♀;Columbia, 22/VII/1967, Parker F.D., malaise trap (USNM). 1 ♀;Columbia, 20/IX/1967, Parker F.D., malaise trap (USNM). 1 ♀;Columbia, 6/IX/1967, Parker F.D. malaise trap (USNM). 1 ♀;Columbia, 7/IX/1966, Huber S.F. (USNM). 1 ♀;Columbia, 16/VIII/1966, Huber S.F. (USNM). 2 ♀;Columbia, Boone Co., 22/VIII/1968, Parker F.D. malaise trap (USNM). 2 ♀;Jefferson City, 6/VII/1941, Adams C.F. (USNM). 1 ♀;Sapp, 10/VII/1954 (UMRM). 1 ♀; Nebraska: Maxwell, 25/VII/1967 (IRCW). 1 ♀; New Jersey: Camden, 1892? (MSUC). 1 ♀;Trenton, Abbatt (MCZ). 1 ♀; New York: Boston, 1/VIII/1909, M.C.V. (UCDC). 1 ♀;Lancaster, 10/VIII/1891, E.P.V. (CAS). 1 ♀; Ohio: Champaign Co., 23/VII/1941, Guillaspy J.F. (OSU). 1 ♀;Champaign Co., 23/VII/1941, Guillaspy J.F. (OSU). 1 ♀;Dayton O., VIII/1927, Basker C.A. (OSU). 1 ♀;W Jefferson, Franklin Co. (USNM). 1 ♀; SouthDakota: Vermillion, 30/VI/1960, Walgenbach D.D. (IRCW). 1 ♀;Davis Ranch, NW Blanco Co., 22/IV/1959, Mason W.R.M. (CNC). 1 ♀;Edna, 19/VII/1908, Mitchell J.D. (USNM). 1 ♀; Texas: Sonora, Sutton Co., 19/V/1973, Menke & Miller (USNM). 1 ♀; Virginia?: Va. (USNM). 1 ♀; Wisconsin: Columbia Co., 23/VII/1961, Carney Don (IRCW). 1 ♀; Dane Co., VIII/1899 (AEIC). 1 ♀; Dane Co., 10/VIII/1899 (AEIC). 1 ♀; St. Croix Co., 2/VIII/1916, McNeel W. (AEIC).